A couple weeks ago we caught wind of a Froyo update coming to the Kyocera-manufactured Sanyo Zio on Sprint. While that was happy news for Sprint users, the Zio also has a home on Cricket, where the software has been stuck at Android 1.6 since the phone’s release (Sprint was at least already at 2.1 before this most recent update). Now those users are finally getting the Froyo love as well, since Cricket has started making its own update available.

You’ll need a WiFi connection to snatch the update, which comes as a series of three downloadable packages. Availability [...]

If the insider Sprint update documents Android Central got its hands on pan out, not only do we have confirmation of the earlier rumored February 21 Froyo update for the Epic 4G, but also our first news on a Froyo update coming to a bit of an Android underdog, the Sanyo Zio.

Both updates are scheduled to begin on the 21st, with the Zio maintenance planned to take place over the following five days. According to the Sprint documents, users should look for a three-part update and try to retrieve over WiFi if at all possible.

Kyocera’s Android-equipped Sanyo Zio is already available on two carriers (sporting 1.6 Donut on Cricket and 2.1 Eclair on Sprint), and now a new image has emerged of the 3.5-inch, WVGA device bearing MetroPCS branding. As is often the case with these leaks, however, it’s not actually clear what the fifth-largest carrier’s intentions are with the handset. The 600MHz-powered Zio, with its CDMA radio, is certainly suitable for the eight-million-subscriber-strong network, although not for its nascent LTE functionality (unless another unknown variant [...]